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污水厂污泥在亚/超临界丙酮中的液化行为
引用本文:黄华军,袁兴中,曾光明,李辉,游俏,周鸣.污水厂污泥在亚/超临界丙酮中的液化行为[J].中国环境科学,2010,30(2):197-203.
作者姓名:黄华军  袁兴中  曾光明  李辉  游俏  周鸣
作者单位:1. 湖南大学环境科学与工程学院,环境生物与控制教育部重点实验室,湖南,长沙,410082
2. 河南科技大学化工与制药学院,河南,洛阳,471003
基金项目:教育部科学研究重点项目 
摘    要: 利用直接热化学液化技术,在1000mL的反应釜中,考察了液化温度、污泥/溶剂配比(R1)、催化剂以及溶剂填充率(R2)对污水厂污泥在亚/超临界丙酮中的液化行为的影响.结果表明,约300℃条件下,污泥液化较为彻底,过低或过高的温度液化效果反而较差.当温度超过340 ℃时,丙酮溶剂参与反应能力增强,促进油产率的增加,至380℃时油产率保持稳定.在其他液化条件相同的情况下,发现污泥在R1为10/200、R2为20%、添加5%剂量的NaOH作为催化剂,获得较好的液化效果.红外光谱(FTIR)和气相色谱/质谱分析(GC-MS)分析表明,生物油的主要成分是含氮杂环、羧酸、酯、酮等化合物,主要的官能团包括胺基、羟基、烷基和羰基等.

关 键 词:污水厂污泥  直接热化学液化  亚/超临界丙酮  生物油
收稿时间:2009-06-11;

Thermochemical liquefaction characteristics of sewage sludge in the sub-and supercritical acetone
HUANG Hua-jun,YUAN Xing-zhong,ZENG Guang-ming,LI Hui,YOU Qiao,ZHOU Ming.Thermochemical liquefaction characteristics of sewage sludge in the sub-and supercritical acetone[J].China Environmental Science,2010,30(2):197-203.
Authors:HUANG Hua-jun  YUAN Xing-zhong  ZENG Guang-ming  LI Hui  YOU Qiao  ZHOU Ming
Institution:HUANG Hua-jun1,YUAN Xing-zhong1,ZENG Guang-ming1,LI Hui1,YOU Qiao1,ZHOU Ming2(1.Key Laboratory of Environmental Biology , Pollution Control,Ministry of Education,College of Environmental Science , Engineering,Hunan University,Changsha 410082,China,2.College of Chemical Engineering , Pharmaceutics,Henan University of Science , Technology,Luoyang 471003,China)
Abstract:Direct thermochemical liquefaction was adopted to convert sewage sludge into bio-oil, and the influences of the temperature, the ratio of sewage sludge to solvent (R_1), catalyst and the volume ratio of solvent to reactor (R_2) on the characteristics of the liquefaction of sewage sludge were investigated with the sub- and supercritical acetone as the solvent in a 1000mL autoclave. It was shown that the sewage sludge was basically converted at about 300℃, while at higher or lower temperature, the effect of liquefaction was worse. When the temperature was higher than 340℃, the ability of the acetone involving in the reaction obtained enhancement so that the yield ofbio-oil was improved as far as 380℃. As other liquefaction conditions were consistent, the liquefaction of sewage sludge could gain a better effect at R_1 10/200, R_2 20% and adding 5% dosage NaOH as the catalyst. The FTIR (Fourier transformation infrared spectromcter) and GC-MS (gas chromatography-mass spectrometry) analyses indicated that heterocyclic nitrogen compounds, earboxylic acid, ester and ketone were the main components of the bio-oil and amidocyanogen, hydroxyl, alkyl and carbonyl were the main functional groups.
Keywords:sewage sludge  the direct thermochemical liquefaction  sub- and supercritical acetone  bio-oil
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